\nI guess \"ER\" isn't the only hospital drama that will admit famous people. ComingSoon.net says that Christina Ricci will guest star on an upcoming episode of \"Grey's Anatomy.\"\n\nSupposedly she won't be a patient, but the details were sort of hush-hush. The episode will air February 5, right after the Super Bowl. \n\nIt's not the first time Ricci has graced the small screen; she's previously popped up on \"Joey\" and had a recurring role on \"Ally McBeal.\"\n\n\"Grey's Anatomy\" airs every Sunday at 10:00 p.m. (EST) on ABC. -- Rachel Cericola\n